Don't depend on download_build_install.py in instrumented library targets.

third_party/instrumented_libraries/standard_instrumented_library_target.gypi

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This file is meant to be included into a target for instrumented dynamic
 # libraries and describes standard build action for most of the libraries.
 
 {
   'target_name': '<(_sanitizer_type)-<(_library_name)',
   'type': 'none',
   'actions': [
     {
       'action_name': '<(_library_name)',
       'inputs': [
-        'download_build_install.py',
+        # TODO(earthdok): reintroduce some sort of dependency
+        # See http://crbug.com/343515
+        #'download_build_install.py',
       ],
       'outputs': [
         '<(PRODUCT_DIR)/instrumented_libraries/<(_sanitizer_type)/<(_library_name).txt',
       ],
       'action': ['<(DEPTH)/third_party/instrumented_libraries/download_build_install.py',
         '--product-directory=<(PRODUCT_DIR)',
         '--library=<(_library_name)',
         '--intermediate-directory=<(INTERMEDIATE_DIR)',
         '--sanitizer-type=<(_sanitizer_type)',
         '--custom-configure-flags=<(_custom_configure_flags)',
         '--custom-c-compiler-flags=<(_custom_c_compiler_flags)',
         '--custom-cxx-compiler-flags=<(_custom_cxx_compiler_flags)',
         '--custom-linker-flags=<(_custom_linker_flags)',
         '--run-before-build=<(_run_before_build)',
         '<(_verbose_libraries_build_flag)',
         '--c-compiler=<!(cd <(DEPTH) && pwd -P)/<(make_clang_dir)/bin/clang',
         '--cxx-compiler=<!(cd <(DEPTH) && pwd -P)/<(make_clang_dir)/bin/clang++',
       ],
     },
   ],
 }